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News Perfect transmission through barrier using sound: research team led by Professor Xiang Zhang proves for the first time a century-old quantum theory
“The perfect transmission of sound through a barrier is difficult to achieve, if not impossible based on our existing knowledge. This is also true with other energy forms such as light and heat. A research team led by Professor Xiang …
“As you can tell from my list of instructables, each year I try to come up with a new and interesting Electronic Christmas Ornament. They are usually loud, heavy, and something generally too big for the average tree, with that …
“A publication by researchers led by physicist Prof. Cornelia Denz is among the world’s 30 most groundbreaking papers of 2020, according to the journal Optics & Photonics News. In its special annual end-of-year issue, the journal selects the research highlights …
“It’s an analog, 20 note polyphonic, square wave synthesizer based on the 555 timer chip. The enclosure and keys are 3D-printed, its models were programmed in OpenSCAD, and its PCB was designed in Kicad. A little history The monophonic …
“LineaMeteoStazione is a complete weather station which can be interfaced with professional sensors from Sensirion as well as some Davis Instrument component (Rain Gauge, Anemometer) The project is aimed as DIY weather station but just requiring the assembly part, because …
“Python in Hydrology is written for learning Python using its applications in hydrology. The book covers the basic applications of hydrology, and also the advanced topic like use of copula.”
“Today I’ll explain how I made this scoreboard which is controlled by a raspberry pi and powered by a 5V power supply. It uses a combination of ws2811 and ws2812b leds for the lighting and the structure is made …
“How to 3D print and assemble your very own programmable and remote controllable automatic domino laying machine. Who likes knocking down absurdly long runs of dominoes? I do. Who doesn’t like laying them all by hand. I don’t …
“In 1969, high-density MOS integrated circuits were still new and logic circuits were constructed in a variety of ways. One technique was “four-phase logic”, which provided ten times the speed and density of standard logic gates while using 1/10 …
“Harvesting lemon trees is considered hard work, due to the big size of trees and also due to the hot climates of the regions where lemon trees are planted. That’s why we need something else to help agricultural workers …